Abstract

Mulgoa No. 2 Well was located in the central-western part of the Sydney Basin, about 35 miles west of Sydney, New South Wales. The well was drilled by the Operator, Australian Oil and Gas Corporation Limited, using a Bucyrus Erie 48-L cable-tool rig, to a total depth of 5630 feet. Drilling commenced on 20th September, 1958, and was completed on 5th November, 1959. A programme of coring and gas sampling was carried out, but no electric logging, perforating or testing operations were undertaken. The well penetrated 2498 feet of Triassic shales and sandstones and 3132 feet of Permian coal measures, sandstones, shales, and siltstones. The objective of the drilling operation was to test the petroleum potential of the Permian strata in the Mulgoa Anticline. Pre-Permian rocks were expected between 5000 and 5200 feet but the well was still in sediments of Permian age when mechanical difficulties caused it to be abandoned at 5630 feet. The well was sited on the eastern flank of the anticline, some 15 miles east (basinwards) of outcropping Permian strata. Many natural gas shows were encountered in the Triassic and Permian beds but none proved to be of commercial significance. The only large flows of natural gas were at 2579 feet and at 3558 to 3559 feet, and these proved to be blowouts in coal seams. Flows in both cases quickly subsided. Orifice meter tests of twelve gas flows gave a maximum yield of 40 Mcf/D, reducing to 10 Mcf/D after 20 hours. The stratigraphic drilling operation at Mulgoa No. 2, New South Wales, was subsidized under the Petroleum Search Subsidy Act 1957-1958, from surface to total depth.
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Product Type/Sub Type

nonGeographicDataset - GA Publication - Other Publication

Constraints

license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

1965

Product Type

nonGeographicDataset

Topic Category

geoscientificInformation

Keywords

GA Publication
Other Publication
petroleum exploration
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

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Unknown

Digital Transfer Options

onLine

DISTRIBUTION Format

pdf

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distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

a05f7893-0013-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

2008-08-12

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

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pointOfContact
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
Downloads
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
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1800 800 173 (within Australia);
 
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Please note that support hours are 9 am to 5 pm weekdays